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/**
* This software is licensed under the Apache 2 license, quoted below.
*
* Copyright 2010 Julien Eluard
*
* Licensed under the Apache License, Version 2.0 (the "License"); you may not
* use this file except in compliance with the License. You may obtain a copy of
* the License at
*
* [http://www.apache.org/licenses/LICENSE-2.0]
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
* WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
* License for the specific language governing permissions and limitations under
* the License.
*/
package org.semver.jardiff;
import java.util.Collections;
import java.util.HashSet;
import java.util.Set;
import javax.annotation.Nonnull;
import org.osjava.jardiff.AbstractDiffHandler;
import org.osjava.jardiff.ClassInfo;
import org.osjava.jardiff.DiffException;
import org.osjava.jardiff.FieldInfo;
import org.osjava.jardiff.MethodInfo;
import org.semver.Delta;
import org.semver.Delta.Add;
import org.semver.Delta.Change;
import org.semver.Delta.Difference;
import org.semver.Delta.Remove;
/**
*
* {@link org.osjava.jardiff.DiffHandler} implementation accumulating {@link Difference}.
*
*/
public final class DifferenceAccumulatingHandler extends AbstractDiffHandler {
private String currentClassName;
private final Set<String> includes;
private final Set<String> excludes;
private final Set<Difference> differences = new HashSet<Difference>();
public DifferenceAccumulatingHandler() {
this(Collections.<String>emptySet(), Collections.<String>emptySet());
}
public DifferenceAccumulatingHandler(@Nonnull final Set<String> includes, @Nonnull final Set<String> excludes) {
this.includes = includes;
this.excludes = excludes;
}
public String getCurrentClassName() {
return this.currentClassName;
}
@Override
public void startDiff(final String previous, final String current) throws DiffException {
}
@Override
public void endDiff() throws DiffException {
}
@Override
public void startOldContents() throws DiffException {
}
@Override
public void endOldContents() throws DiffException {
}
@Override
public void startNewContents() throws DiffException {
}
@Override
public void endNewContents() throws DiffException {
}
@Override
public void contains(final ClassInfo classInfo) throws DiffException {
}
@Override
public void startAdded() throws DiffException {
}
@Override
public void classAdded(final ClassInfo classInfo) throws DiffException {
if (!isConsidered()) {
return;
}
this.differences.add(new Add(getClassName(classInfo.getName()), classInfo));
}
@Override
public void fieldAdded(final FieldInfo fieldInfo) throws DiffException {
if (!isConsidered()) {
return;
}
this.differences.add(new Add(getCurrentClassName(), fieldInfo));
}
@Override
public void methodAdded(final MethodInfo methodInfo) throws DiffException {
if (!isConsidered()) {
return;
}
this.differences.add(new Add(getCurrentClassName(), methodInfo));
}
@Override
public void endAdded() throws DiffException {
}
@Override
public void startChanged() throws DiffException {
}
@Override
public void startClassChanged(final String className) throws DiffException {
this.currentClassName = getClassName(className);
}
@Override
public void classChanged(final ClassInfo oldClassInfo, final ClassInfo newClassInfo) throws DiffException {
if (!isConsidered()) {
return;
}
this.differences.add(new Change(getClassName(oldClassInfo.getName()), oldClassInfo, newClassInfo));
}
@Override
public void fieldChanged(final FieldInfo oldFieldInfo, final FieldInfo newFieldInfo) throws DiffException {
if (!isConsidered()) {
return;
}
this.differences.add(new Change(getCurrentClassName(), oldFieldInfo, newFieldInfo));
}
@Override
public void methodChanged(final MethodInfo oldMethodInfo, final MethodInfo newMethodInfo) throws DiffException {
if (!isConsidered()) {
return;
}
this.differences.add(new Change(getCurrentClassName(), oldMethodInfo, newMethodInfo));
}
@Override
public void endClassChanged() throws DiffException {
}
@Override
public void endChanged() throws DiffException {
}
@Override
public void startRemoved() throws DiffException {
}
@Override
public void classRemoved(final ClassInfo classInfo) throws DiffException {
if (!isConsidered()) {
return;
}
this.differences.add(new Remove(getClassName(classInfo.getName()), classInfo));
}
@Override
public void fieldRemoved(final FieldInfo fieldInfo) throws DiffException {
if (!isConsidered()) {
return;
}
this.differences.add(new Remove(getCurrentClassName(), fieldInfo));
}
@Override
public void methodRemoved(final MethodInfo methodInfo) throws DiffException {
if (!isConsidered()) {
return;
}
this.differences.add(new Remove(getCurrentClassName(), methodInfo));
}
@Override
public void endRemoved() throws DiffException {
}
/**
*
* Is considered a class whose package:
* * is included
* * is not excluded
*
* If includes are provided then package must be defined here.
*
* @return
*/
private boolean isConsidered() {
for (final String exclude : this.excludes) {
if (getCurrentClassName().startsWith(exclude)) {
return false;
}
}
if (!this.includes.isEmpty()) {
for (final String include : this.includes) {
if (getCurrentClassName().startsWith(include)) {
return true;
}
}
return false;
}
return true;
}
public Delta getDelta() {
return new Delta(this.differences);
}
}
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